MLS(ASCP/ASCPi) 7영역 문제은행

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100 문제

• A patient's ABO testing gives the following reactions: anti-A 0, anti-B 4+, A1 reagent cel…
• A pretransfusion antibody screen is positive with both screening cells, but the patient's …
• Ten minutes after a platelet transfusion begins, the patient develops fever, rigors, and h…
• A bleeding patient has a markedly decreased fibrinogen concentration, while the clinical t…
• Urine microscopy shows casts containing numerous red blood cells. Which interpretation is …
• After a reagent lot change, both levels of chemistry control shift above their established…
• Arterial blood gas results are pH 7.28, PCO2 28 mm Hg, and HCO3- 13 mmol/L. Using Winter's…
• A patient has total calcium 7.6 mg/dL, albumin 2.0 g/dL, and ionized calcium within the re…
• A severely lipemic specimen has sodium 121 mmol/L by an indirect ion-selective electrode, …
• Which laboratory pattern most strongly supports uncomplicated iron deficiency anemia?
• An automated CBC reports platelets 28 × 10^9/L with a platelet-clump flag. The patient has…
• A patient has an isolated prolonged aPTT. The result corrects into the reference interval …
• A hematology analyzer that does not automatically exclude nucleated red blood cells report…
• A patient with findings strongly suggestive of secondary syphilis has a reactive treponema…
• Two blood culture sets were collected from an adult. One bottle in one set grows a common …
• During disk diffusion susceptibility testing, the required quality-control strain produces…
• A sputum smear is positive for acid-fast bacilli. Which statement is most accurate?
• A thick blood film is positive for malaria parasites. Which specimen examination is most u…
• A laboratory's monthly indicator shows a sharp increase in hemolyzed chemistry specimens i…
• After venipuncture, what is the safest OSHA-consistent handling of the contaminated needle…
• Seven days after red cell transfusion, a patient develops jaundice, a falling hemoglobin, …
• A group AB patient requires plasma. Which ABO plasma is the first-choice compatible produc…
• Which modification of a cellular blood component is used to prevent transfusion-associated…
• A massively bleeding patient has prolonged PT and aPTT due to deficiency of multiple coagu…
• Urine sediment contains colorless hexagonal plates. Which crystal is most strongly suggest…
• A patient with ongoing hemolysis has frequent high glucose measurements but an unexpectedl…
• Which bilirubin pattern is most consistent with increased red cell destruction when hepati…
• Measured serum osmolality is 320 mOsm/kg and calculated osmolality is 290 mOsm/kg. Which i…
• When a true trough concentration is requested for a repeatedly dosed drug, when should the…
• Marked granulocytic leukocytosis with basophilia is present, and chronic myeloid leukemia …
• A sickle solubility screen is positive. Which next test best distinguishes sickle trait fr…
• D-dimer is produced by degradation of which material?
• An automated WBC count is 50.0 x 10^9/L, and the smear shows 25 nucleated red blood cells …
• Which immunoglobulin class is generally produced first during a primary humoral immune res…
• A gram-positive coccus in clusters is catalase positive and tube coagulase positive. Which…
• A catalase-negative gram-positive coccus hydrolyzes esculin in bile, is PYR positive, and …
• For upper respiratory molecular testing for influenza, which specimen is generally preferr…
• A yeast isolate produces true germ tubes after incubation in serum. Which organism is most…
• One chemistry control result exceeds the mean by more than 3 standard deviations. Under th…
• A technologist needs 50 mL of a 1:10 dilution. How should it be prepared?
• A patient's antibody screen and autocontrol react at 37 C and the antiglobulin phase with …
• Which postpartum patient is the typical candidate for Rh immune globulin prophylaxis when …
• A massively bleeding patient has a fibrinogen concentration of 75 mg/dL. Which component m…
• A newborn is anemic and jaundiced. The maternal antibody screen contains anti-K, and the n…
• Cerebrospinal fluid remains yellow after centrifugation, while the supernatant is clear of…
• Which pattern is most consistent with untreated primary hypothyroidism?
• A patient with chronic kidney disease has a persistently elevated high-sensitivity troponi…
• A visibly hemolyzed serum specimen produces a potassium result much higher than the patien…
• Why is estimated glomerular filtration rate generally more informative than serum creatini…
• Which iron-study pattern most strongly supports uncomplicated iron deficiency?
• Abnormal promyelocytes with heavy granulation and bundles of Auer rods are seen in a patie…
• An asymptomatic patient has a platelet count of 28 x 10^9/L. The analyzer flags platelet c…
• An isolated prolonged aPTT corrects into the reference interval immediately after a 1:1 mi…
• A patient has an undetectable CH50 but a normal AH50. Which defect is most consistent with…
• An alpha-hemolytic, catalase-negative gram-positive diplococcus is optochin susceptible an…
• A nonfermenting gram-negative rod is oxidase positive, grows at 42 C, and produces a blue-…
• When malaria is suspected, what is the principal advantage of examining both thick and thi…
• An immunocompromised patient has meningitis. A yeast recovered from CSF is urease positive…
• A method detects 90 of 100 patients who truly have a disease. What is the diagnostic sensi…
• A verified potassium result meets the laboratory's critical-value threshold. Which action …
• A patient with marked hyperproteinemia shows unexpected weak reactions with both reagent r…
• A donor's red cells are nonreactive at immediate-spin anti-D testing but react at the weak…
• A patient has poor corrected count increments after two ABO-compatible platelet transfusio…
• During a platelet transfusion, a patient develops abrupt high fever, rigors, and hypotensi…
• Which polarized-light finding is characteristic of monosodium urate crystals in synovial f…
• Serum protein electrophoresis shows a narrow, tall spike in the gamma region. Which follow…
• Which serum enzyme is generally more pancreas-specific and remains elevated longer than am…
• A patient presents one hour after a single acute acetaminophen ingestion. Why is a level o…
• Which laboratory pattern is most consistent with SIADH in a clinically euvolemic patient?
• A patient has chronic hemolysis, spherocytes, an increased MCHC, and a negative DAT. Which…
• Which CBC and smear pattern is most typical of immune thrombocytopenia after pseudothrombo…
• A patient with recurrent thrombosis has a prolonged aPTT that does not correct in a mixing…
• A blast population is positive for CD34 and terminal deoxynucleotidyl transferase. What do…
• Which immune mechanism principally mediates a delayed type IV hypersensitivity reaction?
• Which bench profile best supports a typical nontyphoidal Salmonella isolate?
• An oxidase-positive gram-negative diplococcus isolated from a genital specimen produces ac…
• Which finding most strongly supports Giardia infection in a stool examination?
• Which statement best compares commonly used laboratory tests for RSV?
• After a new reagent lot is introduced, both levels of chemistry control remain on the same…
• A patient's hemoglobin changes from 14.2 g/dL to 7.1 g/dL within two hours without a compa…
• Why is routine reverse ABO grouping generally not interpreted in a newborn in the same way…
• A previously identified anti-Jka is no longer detectable in a current antibody screen. Wha…
• A bleeding patient requires red cells before pretransfusion testing is complete. What is t…
• During rapid massive transfusion, a patient develops prolonged QT and hypotension. Which l…
• Pleural fluid protein is 3.6 g/dL and serum protein is 6.0 g/dL. Based on the protein comp…
• Using anion gap = Na - (Cl + HCO3), what is the gap when Na is 140 mmol/L, Cl is 104 mmol/…
• Which arterial blood-gas pattern indicates primary respiratory acidosis before considering…
• In a typical competitive immunoassay, how does the measured signal relate to the concentra…
• Alkaline phosphatase is markedly elevated. Which additional enzyme elevation supports a he…
• Which peripheral-smear finding is most characteristic of megaloblastic anemia caused by vi…
• Which laboratory pattern best supports acute disseminated intravascular coagulation?
• A patient has delayed bleeding and poor wound healing, but PT and aPTT are normal. Which d…
• Strong myeloperoxidase positivity in leukemic blasts most directly supports which lineage?
• The rheumatoid factor detected by many routine assays is most commonly which antibody?
• A formed stool specimen from an asymptomatic patient is submitted for C. difficile NAAT. W…
• Which specimen is preferred for culture of a suspected deep anaerobic abscess?
• Which microscopic morphology most strongly suggests Aspergillus in tissue?
• A young adult has fever, pharyngitis, lymphadenopathy, atypical lymphocytes, and a positiv…
• For a nonparametric reference interval representing the central 95% of a healthy reference…
• Repeated control measurements cluster tightly together but are consistently far above the …